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-rw-r--r--packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol19
1 files changed, 11 insertions, 8 deletions
diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol
index 823e14316..88d2da7d7 100644
--- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol
+++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol
@@ -99,9 +99,10 @@ contract MixinTransactions is
"FAILED_EXECUTION"
);
- // Reset current transaction signer
- // TODO: Check if gas is paid when currentContextAddress is already 0.
- currentContextAddress = address(0);
+ // Reset current transaction signer if it was previously updated
+ if (signerAddress != msg.sender) {
+ currentContextAddress = address(0);
+ }
}
/// @dev Calculates EIP712 hash of the Transaction.
@@ -120,13 +121,15 @@ contract MixinTransactions is
{
bytes32 schemaHash = EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH;
bytes32 dataHash = keccak256(data);
+
// Assembly for more efficiently computing:
// keccak256(abi.encode(
- // EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH,
- // salt,
- // signerAddress,
- // keccak256(data)
- // ));
+ // EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH,
+ // salt,
+ // signerAddress,
+ // keccak256(data)
+ // ));
+
assembly {
let memPtr := mload(64)
mstore(memPtr, schemaHash)